How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
What is the average life expectancy of a well pressure tank?
Wednesday, June 3, 2020
How long does a well pressure tank last?
You can expect a well pressure tank to last 10 to 25 years, with an average of 15 years. The factors that will affect a tank’s longevity include:
•• The tank material, with unlined steel tank having a shorter life than more expensive bladder type with corrosion-resistant tank.
•• Aggressive, acidic water cause premature corrosion.
•• Sand in the water abrades the tank interior.
•• Heavy usage and/or short cycling also reduces lifespan. See our blog post Why does my well pump turn on and off every time I use water? for more on this.
Here’s a bar graph that compares the life expectancy of a pressure tank to other well and septic components.
Go to our blog post What is the average lifespan of the parts of a house? for rating of other house components. To understand the basis, potential use, and limitations of lifespan ratings, see How accurate are the average life expectancy ratings of home components? Are they actually useful?
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Field Guide for Home Inspectors, a quick reference for finding the age of 154 brands of HVAC systems, water heaters, and electrical panels, plus 210 code standards for site-built and manufactured homes, and the life expectancy rating of 195 home components. Available at amazon.com for $19.95.
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Here’s links to a collection of our other blog posts about WELLS:
NOTE: These life expectancies are based on data provided by InterNACHI, NAHB, FannieMae, and our own professional experience. Because of the numerous variables that can affect a lifespan, they should be used as rough guidelines only, and not relied upon as a warranty or guarantee of future performance.
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